V-Force Reed Valve System CR125 87-02

The VForce4R (VF4R) for the Honda CR125 offers enhanced reed petal longevity along with all the benefits of the unique VForce reed valve design.

Standard VForce Reed Valve Features:

• Double the reed-tip surface area compared to conventional reed valve designs.
• Increased bottom-end power, stronger mid-range, and extended top-end performance.
• Improved efficiency due to reduced reed petal travel.
• More airflow delivers increased horsepower.
• Reduced reed petal wear for enhanced durability.
• Screw-free design eliminates the risk of screws entering the engine.
• Screw-free design allows rapid and easy reed petal replacement.

Improved VF4 Features:

• All-new reed petal resin system with carbon fibre construction and optimised lay-up.
• Pre-curved reed petals for better sealing at the tips.
• Wider reed cage for maximum airflow.
• 10.5% increase in total reed tip surface area for improved airflow.
• Airfoil-shaped cage tips to boost air velocity from outer ports.
• Long reed stops to progressively slow petal tip velocity, increasing durability.
• 15.6% reduction in the frontal area of the central wing, combined with a more aerodynamic design.

All-New VF4R Features:

• Rubber overmoulding on the reed tip surface of the cage to further enhance petal life.
• Pre-curved reed petals for improved sealing at the tips.